add iam auth method for kubeconfig

Author: Mia-Cross

docs/resources/k8s_cluster.md

@@ -109,6 +109,24 @@ resource "scaleway_k8s_pool" "john" {
   size       = 1
 }
 
+# Authentication method 1: with IAM token (recommended)
+data "scaleway_iam_user" "george" {
+  email = "[email protected]"
+}
+resource "scaleway_iam_api_key" "ada" {
+  user_id = data.scaleway_iam_user.george.id
+}
+resource "null_resource" "kubeconfig" {
+  depends_on = [scaleway_k8s_pool.john] # at least one pool here
+  triggers = {
+    host                   = scaleway_k8s_cluster.joy.kubeconfig[0].host
+    token                  = scaleway_iam_api_key.ada.secret_key
+    cluster_ca_certificate = scaleway_k8s_cluster.joy.kubeconfig[0].cluster_ca_certificate
+  }
+}
+########################################################
+
+# Authentication method 2: legacy
 resource "null_resource" "kubeconfig" {
   depends_on = [scaleway_k8s_pool.john] # at least one pool here
   triggers = {
@@ -117,6 +135,7 @@ resource "null_resource" "kubeconfig" {
     cluster_ca_certificate = scaleway_k8s_cluster.joy.kubeconfig[0].cluster_ca_certificate
   }
 }
+########################################################
 
 provider "kubernetes" {
   host  = null_resource.kubeconfig.triggers.host
@@ -150,6 +169,24 @@ resource "scaleway_k8s_pool" "john" {
   size       = 1
 }
 
+# Authentication method 1: with IAM token (recommended)
+data "scaleway_iam_user" "george" {
+  email = "[email protected]"
+}
+resource "scaleway_iam_api_key" "ada" {
+  user_id = data.scaleway_iam_user.george.id
+}
+resource "null_resource" "kubeconfig" {
+  depends_on = [scaleway_k8s_pool.john] # at least one pool here
+  triggers = {
+    host                   = scaleway_k8s_cluster.joy.kubeconfig[0].host
+    token                  = scaleway_iam_api_key.ada.secret_key
+    cluster_ca_certificate = scaleway_k8s_cluster.joy.kubeconfig[0].cluster_ca_certificate
+  }
+}
+########################################################
+
+# Authentication method 2: legacy
 resource "null_resource" "kubeconfig" {
   depends_on = [scaleway_k8s_pool.john] # at least one pool here
   triggers = {
@@ -158,6 +195,7 @@ resource "null_resource" "kubeconfig" {
     cluster_ca_certificate = scaleway_k8s_cluster.joy.kubeconfig[0].cluster_ca_certificate
   }
 }
+########################################################
 
 provider "helm" {
   kubernetes {
@@ -350,6 +388,7 @@ resource "scaleway_k8s_cluster" "jack" {
   name    = "jack"
   version = "1.18.0"
   cni     = "cilium"
+  delete_additional_resources = true
 
   default_pool {
     node_type = "DEV1-M"
@@ -365,6 +404,7 @@ resource "scaleway_k8s_cluster" "jack" {
   name    = "jack"
   version = "1.18.0"
   cni     = "cilium"
+  delete_additional_resources = true
 }
 
 resource "scaleway_k8s_pool" "default" {